# trig

Give the phase shift in radians (along x) of f (x) = sin (x - 3pi/5

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I have y=5sin(4x-pie/2). I need too find phase shift. I know c/b is shift. This is pie2/4=.392, but does not equal my answer and I don't know direction it should go. Can anyone help? What do you mean by c/b? What do you mean by

asked by matt on December 9, 2006
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5. ### trig

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7. ### Analysis

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4. Write the equation of the cosine function with an amplitude of 1/3, a period of 2pi, and a phase shift of 3pi/2. I got 1/3COS(1/2x-3pi), but I really do not think that is correct D: any tips or advice?

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